Transformers: Dark of the Moon: An IMAX 3D Experience Opening Date: June 29, 2011. Rated: PG-13. Runtime: 153 min. http://www.imax.com/movies/m/transformers-dark-of-the-moon-an-imax-3d-experience/ This is what My Imax is showing as the run time. I have called around to other local theaters as well and they all say the same thing. So this would make DOTM the longest running of the 3 and not the 134 that Nelson said it would be at. Not saying he lied to us, he may have had bad info on his end or it could be that ALL the theaters on my end got bad info but I doubt the latter.